Type-writing machine.



Il. J. THURLQW.

Ivre wnmns'ucums. A PILItAIOI FIEED IIOV. 2l.- ISIS.

` 1,233,936.. i 4 imma Ju1y17, 1917. I.

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n. 1. 4THLHlLow.. TYPE WRITING MACHINE. 4 APPLICfTIOI FILED IUAV. 21|Ulli. 17,

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' r TYPE WRITING .lACHlNl-l. maman mtg lov'. 2|. ma. Y 1,233,936. mamaJuly 17, 1917, v 4 umn-sunt o. Y

VII. '11111 1111; 111

REGINAL) J THURLOW, OF ALEXANDER, NORTH DAKTA.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented .i niy 1"?, 191'7'.

i Application filed November 21, 1916. Serial No, 132,629.

T aU lwhom it may concern.'

Be it known that l. RnoiNALD J. THUR Low, a citizen oi the UnitedStates, residing ,at Alexander, in the county of McKenzie 5 and State ofNorth Dakota, have invented new and useful Improvements in Type- WritingMachines, of which the following is a specification.

This invention relates to tj'ypewriting machines, and it has for itsobject to produce an attachment of simple and improved constructionincluding, a motor whereby the operator will be relieved oi ay largeproportion of the Strain` and stress of operating the machine,particularly7 as regards the striking ot the keys and the return of thecarriage and. advancing of the paper.,

A further object ot' the invention is to produce a simple and'improveddevice which may be `utilized as an attachment to a conventionaltypewritiug machine or which may be permanently installed or built intosuch machine, the same including a keyboard corresponding to thekeyboard 'of the typewriting machine and having a correspomling set ofkeys, by the manipulation of which .niet-.ln anism will be set in motionwhereby the keys of the typewriter will be actuated.

A further object of the invention is to produce a simple and improveddevice of the character described having actuating keys by themanipulation of which the keys oi' the typewriter'will be mechanicallyactuated not merely once, but the operatonbcing repeated as long as thekey of the attachment is maintained `in a depressed position, thus'enablingr any yclnu'arter to be depressed as many times as may bedesired witlnini. naanipulating the. actuatingattarhmeot but once.

A 'turtller object ot the inventi-"ni is to produce a simple andimproved device \\"lu-,reb v. by 'the manipulation of a single' TWiththese and other ends in View which will readily appear as the nature ofthe in.- vention is better understood, the same c011- in the improvedconstruction and novel arrangement and combination of parts which willbe hereinafter fully described and particularly pointed out in theclaims.

In the accoml'vanying drawings has been illustrated a simple andpreferred form of the invention, it being, however, understood..` thatno limitation is necessarily made to the precise structural detailstherein exhibited, but that changes, alterations and modificationswithin the scope. of the claims may be resorted to when desired.

In the drai'vings- Figure 1 is a. diagrammatic top plan View et' alty}Je\'\'1iting machine equipped with the improved attachment.

Fig. 2 is a diagrammatic side view of the same.

F ig. 3 is 'a side elevation oma larger scale showing a portion of atypewriting machine and a. portion of the attaclnjnent.l i

F 4 is a side elevation Talso. on a larger scale of the forward portionof the attachment. g

Fig. 5 is a sectional view, enlarged. taken on the line 5-5 in IfigQl,and illustrating the mechanism for actuating the typewriter keys.

Fig. G is a View similar to Fig. showing the parts in. a differentposition.

F ig. 7 is a transverse sectional detail, view taken on the line 7-7 inFig.

Fig. S is a detail plan` View of the means for actuating the shift keyof the typewriter. Fig. Q is a detailv side view ol' the same.4Corresponding parts in the several figures are denoted by like chafactors of reference.

A typewriting machine A of conventional construction Yhas been slunvnmounted on a hase B which also supports the improved fjiperatingattachment as well as the motor for actuating! the driven parts, saidmotor' lil-ing preferably an electric motor of any iflesired type whichsupplied by a feed wire l) and which includes a main driven shaft E anda counter shaft F from which motion is transmitted through intermeshinggears (i to the main driven shaft lwhicli.

may thus be constantly driven, said shaft 15 carries at its forward enda pinion 17 meshing with a bevel gear 18 on a transversely disposedcounter shaft 19 which will in the direction indicated piece 31 toaiiord access to the thus be constantly driven when the motor is inoperation. The counter shaft 19 is supported forV rotation in the casing20 ot the improved attachment. The casing 2O is provided atv its forwardend with a key- Oard, the keys of which, 21, correspond with the keys 22of the typewriting machine A, being arranged in the customarymanner intiers or banks.

Each key 21-is mounted on the forward end of a lever 23 fulcrumed on ashaft 24 that extends transversely through the casing, each lever havingat its rearward end an upwardly extending arm 25 provided with a tooth26. The casing 20 has a housing or magazine 27 in which a plurality ofrods 28 are supported for vertical slidable movement, there being onesuch rod for each character key of the machine. Anti-friction bearings29 are provided for the rods in order to reduce friction and wear, andeach of the rods 28 is actuated in a-downward direction by means of aspring 30. The magazine 27 has a removable cap or top interior for thepurpose of cleaning and lubricating the parts when needed. Each rod 28has a notch 32 engaged by the tooth 26 of the arm 25 extending upwardlyfrom one of the leversll 23, said levers being actuated in an upwarddirection by Fmeans of springs 33l arranged underneath, and the rods 28being thus supported in normal or initial position; that is to say, therods 28'will be normally supported by the i-nterengaging'teeth 26 andnotches 32, said teeth being normally held inV engagement with thenotches by the springs 33, whereby the levers 23'are actuated. Each rod28 carries at its lower end an eccentric wheel or disk 34, the 4pivotalsupports of said eccentric vdisks or cams being located in the verticalplane of the axis -of the shaft 19, the latter being equipped with aroller 35 which isV normally driven by the arrow a. .Each rod 28 isprovided with a spring 36 having-a struck up lug or detent 37 thatnormally engages a beveled notch 38 in the disk orcam 34 which willthereby be sup'- ported normally with the major part of 'its'- ody in ayraised position with respect to the pivot member 39 by which it ismounted upon or connected with the rod 28, said s ring detent servingalso to arrest or stop the rotation of the. cam member at the propertime when said cam member has been set 1n motion, as will be presentlydescrlbed.

It will be--seen that by depressing the key i' 21 of one of the levers23 the tooth 26 Will disengaged from the notch 32, causing the rod 28 tobe depressed, partly by gravity and partly by the vaction 'of thelspring 30, thereby pressing the cam member 34 in engagement with theroller 35, by the rotation of which the cam rotated about the axis ofthe pivot member V39, the

power imparted by the fricltional engagement of the cam member 34 ler 35being sufficient to disen' with the ro gage the spring detent 37 fromthe notch 28. If the key 21 is released immediately .after beingdepressed, the lever 23 will be actuated by the spring 33 to move thetooth 26 in the path of the n'otclt 32. The rotation member willl beof'the cam member 34 will thus' result in i is stopped by engagement ofthe spring "f-fdetent 37 with the notch 38. If, however,

the key 21 is maintained in a depressed condition, the reciprocatorymotion of the rod 28 will continue until stopped by the release of thek'ey, because .until such release is effected the cam member 34 will beheldin enga by the action of t e spring 30, and the force 30 and thenpermittingement with the roller 35,

sulicient to continue exerted being sullicient to overcome thefrictional resistance of the spring detent 37.

' Each rod 28 has a' laterally extending arm 40 with which isoperatively connected one arm of va lever 41, the other arm of whichcarries a spring 42,4 through which is threaded a set screw 43 engagingthe typewriter key 22 which corres ends to the attachment key 21,associate with the lever whereby the rod 28 is released, there being arod 28 and a lever 41 for each character.

key of the typewriter and the attachment. The keys 41 are fulcrulned onshafts44 lydifferent planes to support the respective 'levers 41 in themost convenient positions. relatively that are to be actuated thereby.The spring 42 of each lever 41 is bent vso that the terminal portion ofsaid spring will be depressed beneath the point of the set screw 43, andit will be readily understood that l.by proper adjustment of the setscrew the impact or pressure of the lever on the typewriter key may bevaried, according tow-ether' a hard or a rela-tively soft blow isrequired. It will thus be. seen that in a machine used for heavy work`and where much manifolding is required, it will be possible to adjustthe mechanism so that the keys will be struck relatively hard, whenordinary work not requiring ioo to the typewriter keys i muchmanifolding is required the force or impact of the blows may bemodulated. In like manner it will be seen that the keys of small i sharpletters and of punctuation marks may be arranged to receive blows ofless force than those of the large letters,

so as to avoid puncturing of the paper.

Pivotally supported, as at 45, on the frame of the t ewnter A, or in anyconvenient location, 1s a `lever 46 adjacent to one end of which a`drum` 47 is supported for rotai porting the drum carrying end of thelever relation to the constantliylI 46 `in 1ts normal position. Thelever46 is located above and in substantially parallel driven shaft 15, andthe last mentioned s aft carries a spur Wheel 54 located directly belowthe spur wheel 48fj'of the `drum 47 and capable of meshing therewith. Aflexible element, such as a cord 55, one end of which is connected linkor rod 61 casing of keys 21 to a` conveni with and wound upon the drum47, is uided under a guide pu1 ley"56 which is ocated below 'the drum.and fromy thence the cord 55 is guided to the return lever- 57 of thetypewriter carriage 58, the cord bein connected. with the return lever,as s own. Suitable guide means are to be provided for the cord 55, onesuchbein shown as consisting of a pulley 56. A bell crank 58 fulcrumedat 60 has one arm extended in the path of the ty ewriter carriage, theother arm of said bell)crank'being connected by a Withthe arm of thelever 46 oppositeto` that `which carries the drum 47.

"I he tooth'carrying arm of the bell crank 51 1s, connected by arod 62with a lever 63 which is fulcrumed at 64 on the keyboard the attachment.The lever 63 has been shown as extending slightly above the ent positionfor being manil'mlated bythe operator, and said lever i may be equippedwith a pressure button 65 to enable it to be actuated byy pressureexerted obliquelv in a downward direction. It will be seen t at byactuatin this lever the bell crank 51 'may be rocke to disengage thetooth 50 from the notch 49, thus pei.'- mitting the arm of the lever 46carrying the drum 47 to gra vitate downwardly until thespur wheel 48xiieslies Withthe constantly driven spur wheel 54. The cord. 55 beingthus placed under tension will exert "adownward stress on the drum47,"wherebyxthe` spur wheels-4 8 and 54 will be maintained in engaging.position, this being due to the` fact that the cord is guidedbeneath'the pulley 56. The winding of the cord on the pulley willtension the said cord to actuate the return lever of the carriagev whichwill nowbe returned. to its startin point. the carriage returns itstrikes t "ebell crank 5 9, rocking the same and through it and the-connecting rod lthe lever 46 which is thus p restored to" its initialposition, the. catch 49 being engaged bythe tooth 50ct` the springactuated bell crank 51 which is released as soon as the operatorreleases the lever 63.

lt is obvious that as soon as the carriage 'Y moves out of engagementwith the bell crank 59, the operation may be repeated, irrespective ofthe precise locatlon of the carriage on its track.

It desirable that the keys should be l locked against possibility ofmovement while the carriage isbein returned, and inorder' that this maybe e ected there is provided for each rod 28 a toothedv catch member 66,A said catch members being [pivotally mounted on a transversely disposerod 67, and said catch members being connected in serles by a transverseconnecting rod 68. Each catch `member is adapted to engage a notch 69 inthe rod 28 with which it is associated, but the catch members arebalanced in such a Way that they will gra'vitationally swing clear 'ofthenotches 69, said catch members being thus normally idle. Theoperating rod 68 is terminally connected by a rod or link 70 with thelever 63 so that by the aus operation of said lever to disengage the itoothed arzn of the bell crank 51 from the notch 49 of the lever 46, thecatch mem bers 66 will be simultaneously actuated or thrown intoengagement with the notches 69 i of the respective rods 28, saidrodsfbeing thus positively locked against the possibility of downwardmovement. As soon as the lever 63 is released .the parts will berestored to normal or initial position.

For the purpose of actuating the shift keys of the typewriter specialmeans are re-` quired owing to the fact that the shift keys are locatedat a distance from the keyboard of the attachment. The shift key 71 ofthe typewriter is actuated ci' depressed by onel arm of i lever 72fulcrumed at 73 the other arm of which is connected with and actu- Aated by one arm of a lever 74 fulcrumed at 75. and the other arm ofwhich carries the pressure button 76. The levers 72 and 74 are iulcrumedeXteriol-ly on the side wall of the 4aieschment casing 20, and saidlevers are terminally bent` as shown at 77, 78. the v bent end 77engaging the pressure button of the shift key carries the pressurebutton 76.

colmection with the drawings hereto an:` maxed, the operation andadvantages of this 7while the bent endg78' ici-2.1 From the foregoing!description, taken in invention will be readily understood. By

the use of the'improved device or attachment speed may be gained, andthe strength of the operator may be conserved since but very slighteiort is required to depress the keys 21 and 65 whereby the mechanism isset in motion that actuates the keys of the typewriter as well as thecarriage to eiectfthe return movement of the latter. The actual powerrequired for these operations is provided by the motor C, and by themeans herein described, the power for actuating the typewriter keys maybe modulated or varied.

The casing of the improved device or attachment has been shown as beingequipped with a detachable cover member 79 which may be secured byfastening members 80 in such fashion as to permit its ready removal toaiord access to the mechanism contained in the casing.

Having thus described the invention, what is claimed as new, is

1. In a device of the class described, a rod supported for verticalreciprocation, a key actuating lever operatively connected vwith saidrod, an eccentric disk pivotally connected with t/ef,y rod, and aconstantly rotatin roller a ap'ted to engage the disk to pro ucereciprocatory motion of the rod.

v2. In a device of/the class described, .a rod supported f r yerticalreciprocationfa key actuatingll lever operativelyconnected with said roan eccentric disk pivotally connected with the rod, and a constantlyrotatin 'roller' adapted to engage the disk to pro uce reciprocatorymotion of the rod; and spring means whereby the rod carrying theeccentric disk is forced in the direction of the constantly rotatingroller.

3. In a device of the class described, a, rod supported forverticalreciprocation, a key actuating lever operatively connectedf'with said rod, an eccentrlc disk pivotally connected with the rod, anda constantly rotatin roller adapted to engage the disk to pro uccreciprocatory motion of the rod; and spring means w vereby the rodcarrying the eccentric disk is .-forced in the direction of theconstantly rotating roller; in combination with key actuated supportingmeans whereby the disk carrying rod may be normally supportedintermediate the limits of its reciprocating( movement.

4. In a device of the class described, a rod supported for verticalreciprocation, a key actuatin lever operatively connected with said r aneccentric disk pivotally connected with the rod, and a constantlyrotating roller adapted to engage the disk to roduce reciprocatorymotlon of the rod; andJ spring means whereby the rod carrying theeccentric disk is forced in the d1rection of the constantly rotatingroller; in com- 1 its movement.

bination with key actuated .supporting means whereby the disk carryingrod may be normally supported intermediate the limits of itsreciprocatory movement; and means whereby the eccentric disk may besupported against rotation.

5. In a device of the class'described, a rod supported for verticalreciprocation, a key actuating lever operatively connected with saidrod, an eccentric disk or cam pivotallyV connected with the rod, saiddisk having an inclined notch, and a spring detent carried by the rodand adapted forengagement with said notch to obstruct rotation of thedisk.

6. In a device of the class described, a rod supported for verticalreciprocation, a key actuating lever operatively. connected with saidrod, an eccentric disk or cam pivotally connected with the rod, saiddisk having an inclined notch, and a spring detent carried by the rodand adapted for engagement with said notch to obstruct rotation of thedisk, in combination with a constantlv rotating roller` and spring meanswhereby the disk carrying rod may be forced in the direction of saidroller.

7 In a device of the class described, a rod supported for verticalreciprocation, a key actuating lever operatively connected with saidrod, an eccentric disk or cam pivotally connected with the rod, saiddisk having an y inclined notch, and a spring detent carriedl by the rodand adapted for engagement with said notch to obstruct rotation of thedisk, in combination with a constantly rotating roller and spring meanswherebyv the disk carrying rod may be forced in the direction of saidroller; and key actuated means` whereby the disk carryin rod may benormally supported interme iate the limits of 8. Ina device of the classdescribed,` a rod supported for vertical reciprocation, an eccentricdisk or cam ivotally connected therewith, a constant y rotating roller vadapted to be engaged by the disk to produce reciprocatory motion of therod, and a sprin detent carried by the rod to engage the disk and toobstruct rotation thereof,

said rod having a notch; and a key actuat direction of the roller.

In testimon whereof I aix my signature in presenceo two wtn.

REGINALD J. 'JJJEIURLOW` Witnesses:

J um E. ,Tmmnom EDGAR H. THUnmw.

